Thread bobbin producing machine



Dec. 13, 1938. c, E, BOULE 2,140,046

THREAD BOBBIN PRODUCING MACHINE Filed May le, 195e 4 sheets-sheet 1" 4a"4/ 4f if J3 4# /7 4M /ff /M Dec. 13, 1938. c', E. BOULE 2,140,046

THREAD BOBBIN PRODUCING MACHINE Filed May 16, 1936 4 sheets-sheet 2 Dec.13, 1938. c. E. BOULE l THREAD BOBBIN PRODUCIG MACHINE Filed May 16,l1936 4 Sheets-Sheet 3 Dec. 13, 1938.

c.E. BOULE I 140,046 l THREAD BOBBIN PRODUCING MACHINE Filed May 16,41936 4 Sheets-Sheet 4 ...ma l

www v www Patented Dec. 13, 1938 UNITED STATES PATENT OFFICE Camille E.Boule, East Hampton, Conn., assignor to Summit Thread Company, EastHampton, Conn., a corporation of Connecticut Application May 16,

9 Claims.

This invention relates to apparatus for producing thread bobbins,particularly though not exclusively, those which are furnished readywound for use in the shuttles of sewing machines, which consist of atubular core, paper disks constituting heads secured to the ends of suchtube, and a mass of thread wound about the tube between the heads. Itcomprises improvements in the means for automatically assembling theparts of such structure, the particulars of one embodiment of which aredescribed in the Vfollowing specication. The invention also comprisesthe novel principles and equivalents of such embodiment within the scopeof the appended claims as interpreted with respect to the prior art.

In the drawings which illustrate the embodiment oi the invention abovementioned- Fig, 1 is a front elevation, with parts broken away and shownin section, of a machine organized and operable to apply paper heads tothe core tubes of bobbins containing the improved features referred to;

Fig. 2 is an end elevation, also shown partially in section, of themachine;

Fig. 3 is a plan View of the machine shown with the cop magazine andwater container removed;

Fig. 4 is a vertical section taken on line 4-4 of Fig. 3;

Figs. 5 and 6 are detail horizontal sections on a larger scale, taken onlines 5 5 and 6 6 respectively of Fig. 1;

Fig. 'l is a detail vertical section taken on line 'l-l of Fig. 5;

Fig. 8 is a perspective view of the instruments by which patches ofdried adhesive on the bobbin heads are moistened preparatory to unionwith the bobbin core tube;

Fig. 9 is a side View of a fragment of a continuous paper strip orribbon perforated at intervals, provided with patches of dried adhesivecontiguous to the perforations, and embossed in areas concentric withthe perforations, from which the embossed portions are severed to formthe heads of the completed bobbins;

Fig 10 is a section of such strip taken on line lil-iii of Fig. 9;

Fig. 11 is a perspective view of the parts of the bobbin prior toassembling and of the instruments by which the initial connectionbetween the core tube and heads is effected;

Fig. 12 is a detail sectional view showing the operation of applyingheads to the core tube 5 1936, Serial No. 80,121

Fig. 13 is a cross section taken on line I3-I3 of Fig. V12; I

Figs. 14 and 15 are views similar to Fig. 12 showing successive stagesin the procedure of applying and connecting the heads to the core tube;

Fig. 16 is a sectional View of other instruments by which the final stepof connection between the tube and heads, and iinishing of the bobbins,is` performed;

Fig. 1'7 is a partial side elevation and partial axial section of abobbin produced by the machine shown in the preceding figures.

Like reference characters designate the same parts wherever they occurin all the figures.

I will rst describe the characteristics of the bobbin and the steps ofassembling its parts. Such bobbin consists of a tube a and heads b, bapplied to opposite ends of the tube. Or, if desired, the bobbin may beprovided with one head only. The heads are made of strong, tough paperhaving appreciable stiiness, but at the same time thin and exible enoughto be capable of yielding and bending resiliently to some extent withinthe elastic limit. A mass of thread c is wound around the tube a betweenthe heads, preferably with the so-called universal wind, whereby itsconvolutions are maintained in place without assistance from the heads.

Before application to the tube, the heads are centrally pierced withtriangular holes d (Fig. 11), the angles of which are located in thecircumference of a circle equal to the end of the bore of the tube, andthe sides of which are chords of such circle. On the face of the headwhich is designed to abut against the tube, adhesive e is applied inpatches or areas which collectively form the chordal segments of acircle surrounding the hole and of a diameter approximately equal to theoutside diameter of the tube a. In assembling' the heads with the tubetheir gummed areas, in moist condition, are applied against the ends ofthe tube and the segmentsl between the sides of the triangular holes andthe inner rim of the tube are turned into the tube and bulged radiallyoutward into close contact with the contiguous inner wall of the tube.Such inturned segments form tabs f which, being united to the tube bythe adhesive, effect a strong union. There is, or may be, a furtherunion between the end of the tube and that part of the head which abutsthereagainst; and the head is preferably indented or offset in anannular zone g closely surrounding the end of the tube, whereby thestrength of the bond is enhanced and a more pleasing finished appearanceis produced.

For convenience in assemblage by automatic mechanism, the heads arepresented to the assembling machine as unsevered areas in a paper striph of indefinite length, (Figs. 9 and 10), in which the holes d have beencut. Circular portions of the strip concentric with such holes aresevered by automatic means prior to assemblage. The adhesive is appliedto the strip in the locations previously described, and may be thusapplied immediately before severing and application of the head to thetube, orit may be first applied and dried, and then moistened shortlybefore application of the head to the tube.

Preferably the areas of the strip intended to be cut out as bobbin headsare embossed or offset in such fashion as to form annular beveled zonesy' which, when severed from the strip, form the marginal portions of theheads and exert a light pressure on the outer parts of the threadwinding.

The machine which I have illustrated here for producing the bobbins thusdescribed, is designed to operate with previously wound thread cops andwith continuous strips of paper from which heads are cut. The threadcops consist of short sections of paper tubing and a quantity of threadcross wound thereon. They are produced according to methods long andcommonly usedin the business of purveying ready wound bobbins withoutheads for use in sewing machine shuttles.

K That is, after winding, the wound thread is compressed axially tobring its convolutions closer together, make thefmass more compact, andreduce a given length of wound thread to the minimum bulk. At the sametime the core tube is swaged or compressedl lengthwise to make itslength equal to that of the thread mass and bring its ends flushwith'those of the mass.V

A quantity of such wound cops or bobbins are contained loosely in ahopper or magazine 20 which is supported by standards 2| on and abovetheframework 220i the machine. Such frameworkV has legs 23, broken awayand not shown completely in these drawings, by which it may be supportedon the oor or a bench or pedestal. In the opposite ends of theframework, which is provided with bearings of any suitable character,are shafts 24 and 25 parallel to one another and extending in the frontto rear direction of the machine. These shafts are rotatedsimultaneously by a drive shaft 26 through Worm and gear couples 21, 28and 29, 30 respectively, which are enclosed by protective housings 28aand 30a. The driving shaft in turn is, driven from any convenient sourceof power by any desired means, such means shown here being a pulley 3|on the shaft and a belt 32.

Shaft 24 drives, through gears 33 and 34, (Fig. 4), a shaft-35 on whichare secured a cam 36 (Fig. 4) and a sprocket 31 (Fig. 1). Sprocket 31drives, through chain 38, sprocket 39 and gears 40 and 4|, a shaft 42(Fig. 2). Shaft 42 operates two lifters 43 and 44, guided to reciprocatevertically at each side of the outlet from the hopper, so that suchlifters rise and descend oppositely toV one another. For this purposethe shaft is connected with each of the lifters by a crank pin'45,connectingrod 46 and lever 41, and the crank pins for the respectivelifters are at opposite sides of the axis of the shaft. The liftersjostle and agitate the random collection of cops, preventing them fromforming an arch over the hopper outlet and permitting those which happento drop in register with a vertical discharge chute 48 to enter thechute and rest one upon another in peripheral tangent contact withtheir' axes parallel to one another. The transverse dimensions of thechute are so proportioned with respect to the `axial length and diameterof the cops that the cops are excluded from the chute except in therelationship above described.

The chute is open at the lower end, but is there blocked by a Idisk 49(see Fig. '1), in the periphery of which are a number' of notches 50equally spaced around the center and each of a. radial depth andcircumferential width approximately equal to the diameter of the cops.In

. other words these notches are of proper dimen- Ythat transversedimension of the chute which corresponds to the diameter of the cops,with its outer circumference close to the outlet from the chute. Hence,as it is rotated step by step with a pause when each notch comes intoline with they chute, it receives cops one at a time and carries themaway to a discharge point; and in each step of its motion a projectionbetween two notches holds back the lowermost cop in the chute until thefollowing notch has come into line.

The index plate has also the important function of locating the copssuccessively in two operating positions, one of which is that of the copshown at c' and the other is that of the cop shown at c2 in Fig. '1.Hence the notches must be of correct dimensions and correctly spaced tolocate all of the cops of al given size in the working locations, withinpermissible limits of error. A guard 50| of channel section is securedto one side of the chute 48 and extends around the circumference of theindex plate far enough to retain the cops in place when they reach theworking location c2. The flanges of such guard ernbrace the rim of theplate in the sector between the operating positions as shown by dottedllines. When carried beyond the end of the guard, the completed bobbinsfall from the index plate into a receptacle, not shown.

The index plate is secured to a shaft sup-V ported in bearings on theframe structure, which carries a fixed ratchet wheel 52 driven by a pawl53 carried by the arm 54 of a lever which is pivoted on shaft 5|, andthe other arm 55 of which is connected by a link 56 with a lever 51.This lever is pivoted on a bracket 58 rising from the rear part of theframework, and carries a follower roll 59 which engages the cam 35 andis displaced by the latter with every revolution of shaft 34. The camembraces only a small fraction of 360, hence causes a quick movement ofthe index plate and allows the latter to remain stationary during mostof the cycle of operations. The teeth of the ratchet 52 are equal innumber to the notches in the index plate, and are suitably correlatedwith the latter to effect the results described.

Two paper strips h, h from which bobbin heads are to be cut are led fromreels or drums 60, 6| supported b-y brackets 52, 63 at the rear of themachine. The strips pass to and through guides 64, E5 on either side ofthe vertical plane through the index plate and hopper chute, andterminate at points near the bobbin location c', as plainly shown inFigs. 5 and 7. A feeder 68 slides forward and back midway between theguides 64 and 55, in a guideway S1 on the upper end of a block 58 whichrises from the frame structure. Pawls 69 and 1D project from the forwardend of the feeder and are pressed apart from one another by a spring 1|(Fig. 5) so that their extremities bear against the guideways 64 and 65or against paper strips occupying such guideways. These guideways haveretainer iianges 65a for the upper and lower edges of the strips, asshown in Fig. '7, which are interrupted to leave room for entrance andtravel of the feeder pawls. These pawls effect a positive feed of thestrips by entering the holes d already prepared in them; and the holesare preferably located so that one of the straight bounding edges isperpendicular to the movement of the pawl and in position to receive theforward thrust of the pawl. This arrangement obtains maximum immunity todanger of the hole being torn by impact and thrust of the pawl.

Mechanism for reciprocating the feeder block is shown in Figs. 3 and 4.This comprises a bell crank lever 12 pivoted to a bracket 13 on theframe structure, a link 14 connecting the feeder with one arm of thisbell crank, an eccentric rod '.15 connected to the other arm of the bellcrank, an eccentric 16 surrounded by a strap 11 to which the rod 15 issecured, and a shaft 18 driven from shaft 25 by gears 19 and 8|), and towhich the eccentric is keyed. The strip guides are located to conductthe strips h, h with the line of holes intersecting the axis of the copin the location c of Fig. 7, and the feed mechanism is organized toadvance the strip, with each motion, a distance equal to the centerspacing between the holes and to leave the strips with a hole in eachapproximately in axial alinement with that cop position.

Rising from the frame structure at opposite sides cf the index plate 49are fixed blocks 9| and 82, each having a bore or passageway axiallyalined with one another, and in approximate axial alinement With the copposition c', in which are slidingly fitted punches 83 and respectively.These blocks (which for convenience may be called cutter supports), aretransversely slotted at 85 and 86 in their front and rear sides to adepth and width sufficient to afford passageways for the strips h, h,and are counterbored and internally threaded at their inner ends andthere fitted with annular cutting dies 91 and 93 in cooperative registerwith the punches 93 and 84 respectively.

The punches have longitudinal axial guideways in which are slidinglyfitted rods 89 and 99 respectively, the function of which is to centerbobbin heads cut from the paper strips with the bobbin core tubes andeifect an initial attachment of such disks to the tube. 'Ihe rods may becalled for descriptive convenience assembling rods or members. In orderto perform the functions indicated, each rod is provided with aprojection 9| on its end of triangular prismatic form with dimensions toenter and iit closely the hole in the adjacent bobbin head, and theangles of which are dimensioned to enter and make three point engagementwith the bobbin tube, thus alining and centering the tube and heads withone another. Preferably the angles of both the extension prisms and theholes in the disk do not continue to sharp edges, but are somewhattruncated so as to avoid danger of cutting the disks and tubes.Preferably also the extremity of the prism is chamfered to facilitateentrance into the holes and tube orifices. Adjacent its prismatic endeach assembling rod is cylindrical with diameter approximately the sameas the bore of the cop tube, but small enough to bend the segments ofthe paper head adjacent to the sides of the hole into the tube and crowdsuch segments outward to a cylindrical curvature in contact with theinner walls of the tube.

Operating mechanism for the punch 84 and assembling rod 90 is shown inFig. 5. A guide 92 is iixed on the frame structure, in which a slideformed with a recess in its upper part between its ends, is mounted tomove in a straight path tor-Jard and away from the mid front-to-rearpiane of the machine. Thrust rods 94 and 95 slidingly mounted in theslide 93 to move in the same directions. Rod 94 is directly connected toiiange 99 on punch 84, and rod 95 is connected by a coupler block 91with an extension the assembling rod 9D. A spring 98 reacts between thecutter support 82 and punch 34 tending to move the latter and its thrustrod 94 outward, and a spring 99 reacts between a portion of slide 93 andthe coupling block 91 located in the recessed part of the slide in amanner to transmit thrust yieldingly from the slide to the assemblingrod 99. Said rod is slidable endwise in a tubular plug iai, adjustablyconnected to the slide and protruding toward the punch. A third spring,or rather a pair of springs, |92 (Figs. l. and 3), further describedlater on, tends to moved slide 93 also in the same outward direction.Cams it, iiii and |55 keyed to the shaft 18 engage respectively theslide 93 (through a follcwer roll it) and the thrust rods 94 and 95 tooperate the punch and assembling rod in proper sequence to perform theirappointed functions.

A similar but reversed mechanism is provided for operating the punch 83and assembling rod 89, and includes the cams |01, |98 and |09 shown inFig. 3. So far as duplicates of the operating members 93||J| are shownin connection with left hand punch and assembling rod, in Fig. 3 andelsewhere, they are designated by the same reference characters.

The same springs l 92 act equally and oppositely on both slides 93.'Ihey are confined between abutments |69 on these slides. Being ofhelical form and very long in proportion to their diameter, they areheld in line by positioning rods i i i, which pass slidingly through theabutments i i@ and are prevented by nuts on their ends from slipping outof place.

The cams |93, |04 and |95 are suitably designed and timed so that, inthe operation of the machine, the cam |93 first advances the slide 93,bringing the prismatic end of the assembling rod a hole in the paperstrip. Further advance of the slide causes the plug to thrust againstthe punch 84, advance the latter to cut a disk from the strip and bringthe disk against the side of the thread cop. Cam E95 then advances theassembling rod independently into the cop tube far enough to cause ittocenter the tube and disk by means of its prismatic end and then toinward the adhesive segments of the disk between the edges of the holeand the rim of the tube, and to bulge such segments into firm surfacecontact with the interior of the tube. Slide 93 is then withdrawn by thesprings Iii, withdrawing the assembling rod, and the punch is showed towithdraw until the thrust rod 94 is arrested by a dweil of cam |94,which has meanwhile been brought beside the outer end of this rod.Retraction of the punch thus permitted is enough to release the bobbin,but the punch is held in the opening of the die 8S until the index platetakes its next step of rotation, whereby to prevent the bobbin fromslipping into the die accidentally and being injured. As soon as theindex plate has substantially completed its movenient, which isperformed in a very brief time, the punch is permitted to Withdraw clearof the paper strip when the latter is advanced to bring an uncut areainto cutting position and a hole into line with the assembling rod.

Equal and opposite actions are performed by the cams II, |98, |39 andthe punch 83 and assembling rod 89 at the opposite sideof the machine,simultaneously With the actions above described, whereby heads areapplied and fastened to opposite ends of the thread cop at the same timeand the thrusts of the oppositely acting punches and rods balance eachother. The iength of the prismatic extensions of the two assembling rodsis slightly greater than the thickness or the paper disks, as appearsfrom Figs. 12 and 13, enough so to enable these extensions to center thethread tube with the disks. They are so short, however, that theadjacent parts of the rod, of full cylindrical form, may enter oppositeends of the tube simultaneously without bringing the extensions intoContact With one another.

A finishing operation is performed upon bobbins in the position c2 byinstruments shown in Figs. 6 and 16. At one side of the index plate andin substantial alinement with the bobbin axis in position c2 are astationary anvil H2 and a coaxial centering rod H3. At the opposite sideof the index plate are a slidable tubular press die il and a centeringrod I|5 passing through its axis. The members at one side are axiallyalined with the members at the other side. Rod H5 is connected by alongitudinally adjustable screwthreaded adapter H6 with a slide I ilmounted to travel laterally in guides at the front of the machine andcoupled by a connecting rod I 8 with a crank H9 (Fig. 1) on the shaft25. The press die is slidingly mounted in a fixed guide |28 and isretracted from the index plate by a spring |2| to the limit permitted bya shoulder |22 on the die. When the slide I1 advances from right to left(Fig. 6), the advancing end of the adapter engages the outer end of dieI I4, and thrusts its inner end against the bobbin, thereby displacingthe bobbin against the anvil die I I2 and exerting pressure on thebobbin.

Centering rod |I3 is guided in a bracket |23 (Fig. l) and is pressedupon by a spring I 24 to the right from the position shown in Fig. 6. Alever |25 pivoted to a fixed bracket |26 is coupled with slide I by anupright |2'| fixed to the slide and a connecting link |28. The arm oflever |25 at the opposite side of its pivot from the connection withlink |28 engages a collar |29 on the rod. Thus the slide Il? controlsboth rods, causing them at times to travel oppositely to one another andcausing both to be retracted at the same time.

As the rod I I 5 advances leftward from the position shown, the rod I I3is at the same time relieved of restraint by lever |25 and is advancedby its spring toward the right. Thus the rods advance through oneanother in substantially equal measure. the ends of the bobbin core andcenter it. The stroke of the rod H5 is long enough to carry it all theway through the bobbin, and in passing through, it pushes the rod I I 3back to the position shown in Fig. 16. Its diameter is large enough toexert a radial pressure on the core tube of the bobbin, whereby itexpands the inturned tabs Their ends are sufficiently beveled to enterYf of the heads into more forcible contact with the tube, displaces anyinward distortion of the tube Which may have resulted from the previousoperation, and gives uniformity of diameter to the entire bore of thebobbin. It also prevents inward buckling of the tube under the pressureoi the die H4 and anvil H2.

The press die has an annular bead or rib |3| concentric with its bore,and the anvil has a corresponding bead |32 (Fig. 16), which are ofappropriate form and properly located to indent the bobbin heads oncircular lines closely embracing the tube ends. Such beads and theindentations produced by them are shown in principle in Figs. 16 and 17,but with exaggeration of dimensions, as Well as exaggeration of thethickness of the tube and heads for clarity of illustration. Thepressure exerted by the die in this operation is regulated by adjustmentof the adapter IIB, which is also a pusher for the die, and isadjustably threaded into the slide H1, as previously described. It isequipped with a lock nut iiia to secure its adjustments. When the rod i5withdraws, the iinished bobbin is stripped from it by the die Hd, whichis arrested by its shoulder |22 with its end so near to the index platethat it releases the bobbin from the rod While the major part of thebobbin remains between the end faces of the index plate. Thus the indexplate is enabled to propel the finished bobbin to the discharge point.

Preferably the index plate is made of yieldable and resilient toughmaterial, such as vulcanized rubber of a composition suitable to make itnearly enough rigid to perform its supporting and carrying functions.Its yielding character and relative softness as compared with thepunches 83, 84 and the press die H4 avoids injury to these elements incase any parts of their edges should strike the boundaries of thenotches in the index plate.

The patches or areas e oi dried adhesive which the prepared strips carryadjacent to their perforations, are moistened shortly before the headsare cut from the strips and applied to the tube. The machine is equippedwith moistening means, here represented as a pair of arms |33 and |34(shown in detail in Fig. 8), which are pivoted on top of the cuttersup-ports 8| and 3E (Fig. 3) and have depending extensions |35 and |35which extend between the strip guides. The extremities of theseextensions are beside one of the stopping locations of the holes in eachstrip, between the feeder and the punches. Pockets are Iformed in theouter faces of such extremities which contain pads |31 of felt or otherabsorbent material adapted to apply moisture to the strips when broughtin contact with them. Such pads are supplied With Water from an elevatedtank |38 (Figs. 1 and 2), from which flexible tubes |39 and |46 lead tothe two arms. Passageways IM in the arm extensions lead from therespective tube connections to the pad sockets, as shown with respect tothe arm |33 in Fig. 8, furnishing continuously a suiiicient supply ofWater to keep the pads moist. Springs M2 normally hold the armextensions away from the strips, as shown by Fig. 3. They are moved out-Ward so as to meisten the gummed areas when the punch slides 93 advance,being so operated by adjustable pusher rods |553 which project aheadV ofthe slides and applyl thrust to short arms IM through transmission rodsM5 which are supported slidingly in fixed guides |45 in line with thepushers I 43. The short arms I 4 4 tub are extensions of the arms |33and |34 to opposite sides of their pivots from the pad-carryingextremities.

Instead of moistening previously applied and dried patches of glue,mucilage or other suitable adhesive, it is within my contemplation touse the moistening means, or their equivalent, for the initialapplication of adhesive to the strips. This can be accomplished bysupplying the tank |38 with a freely iluid adhesive.

The operation of the machine has been described in connection with theforegoing description of its operating instruments and the propellingmechanisms therefor.

IIhe foregoing specific description and the drawings to which it relatesare intended to explain the invention with reference to a concreteembodiment and not to indicate limitations in its. scope other thanthose expressed in the claims.

What I claim and desire to secure by Letters Patent is:

l. A bobbin making machine comprising means for supporting a bobbin coretube, means for presenting a disk in approximately axial alinement withsaid tube, such disk being adapted to serve as a head for the bobbin andhaving a polygonal central hole of which the angles lie substantially ina circumference equal to that of the bore entrance in the adjacent endof the tube, means for rendering adhesive areas of the disk contiguousto the sides of the hole on the surface next to the tube, an assemblingrod guided to move lengthwise in a path substantially alined with theaxis of said tube when so held, said rod having on one end a prismaticextension complemental to the hole in the bobbin head and having a crosssection adjacent to said prismatic extension which is similar andapproximately equal to the said bore entrance of the tube, and means formoving the assembling rod with its prismatic end foremost from aposition at the opposite side of the head from the tube, so that itsprismatic extension first enters the hole and then enters the tube,centering the head with the tube, and thereafter further advancing theassembling rod so as to bend the adhesively treated segments of the headinto the tube and crowd such segments outwardly into contact with thecontiguous inner walls of the 2. A bobbin assembling machine comprisinga holder for a core tube adapted to support such tube in a prescribedposition, an assembling rod guided to move lengthwise in a pathapproximately coincident with the axis of a tube held in said position,said assembling rodhaving at its extremity nearer to the tube aprismatic extension of which the corners lie in a circumference equal tothat of the bore entrance of the nearer end of the tube, the assemblingrod adjacent to the extension having a circular cross sectional areaapproximately equal to that of the said bore entrance, and means forreciprocating the assembling rod toward and intov the adjacent end oithe tube and away therefrom.

3. A bobbin asembling machine as set forth in claim 2 and comprisingfurther a punch coaxial with the assembling .rod and reciprocatableindependently thereof in the same directions, a cooperating annular dielocated between the position in which the tube is held and the withdrawnposition of the punch, means for feeding between said die and withdrawnpunch a strip of bobbin head material having a row of polygonalholescomplemental to the prismatic` extension of the assembling rod andarresting such strip with one of such holes in alinement with theassembling rod, and means for reciprocating the punch.

4. A bobbin assembling machine comprising a holder adapted to supportthe tubular core of a bobbin in position for assemblage with a head, aguide for a strip of bobbin head material extending in a line, theprojection of which crosses the projection of a core tube held by saidholder, a coaxially arranged assembling rod and punch mounted toreciprocate independently of o-ne another in a line approximatelycoaxial with a bobbin core so held, the assembling rod having aprismatic extension on the end nearer to the tube position, the anglesof which extension lie in a circular circumference equal to the neareroriiice of the bore of such a tube, a die complemental with the punchlocated in axial alinement therewith and between the tube position andthe line oi the strip guide, means for adhesively treating a strip insaid guide, and mechanism for reciprocating the assembling rod and punchtoward and away from the tube holder.

5. A bobbin assembling machine comprising a guide adapted to conduct astrip of bobbin head material in a prescribed path, feeding meansadapted to propel a strip step by step in such path, a moistener locatedto apply a moistening liquid or an adhesive to a limited area of a stripin said guide, a holder for bobbin core tubes adapted to support such atube in assembling position beside the path of the strip, an annularcutting die between such path and the said assembling location of thetube, a punch complemental to the said die mounted to reciprocatethrough the die and across the strip path toward and away from said tubelocation, an assembling rod guided to reciprocate coaxially in saidpunch having a prismatic extension of which the angles lie in acircumference approximately equal to that of the orifice of the tube,and the cross section adjacent to said extension is substantiallycomplemental to the tube bore, and mechanism for operating said stripfeeder, said moistener, said punch and said assembling rod in time tomoisten an area of the strip, advance the strip across the path of thewithdrawn punch and assembling rod, and advance the punch and rod to cuta bobbin head from the strip and apply such head to one end of the tubeand bend adhesively treated segments of the disk adjacent to its centerinto the end of the tube and against the continuous inner walls theerof.

6. In a bobbin assembling machine, a strip guide, a feeder forpropelling a strip of bobbin head material step by step along saidguide, a moistener adjacent to the path of such guided strip, beingnormally withdrawn from the strip, a punch reciprocatable across thepath of the strip after emergence from the guide, means forreciprocating the punch to cut bobbin heads from the strip, and meansoperating in conjunction with the punch reciprocating means for bringingthe moistening device against a limited area of the strip, whereby sucharea is rendered adhesive.

'7. A bobbin assembling machine comprising means for placing and holdinga tubular bobbin core successively in two operating locations, meansadjacent to one of such locations for applying a bobbin head against oneend of such core and bending adhesively treated central parts of thehead into the core and against the inner walls thereof adjacent to suchend, and means adjacent to the second operating position organ ized toenter and fill the tube and inturned parts of such head, and to indentthe head from its outer side in a line closely surrounding the end ofthe tube.

8. A. bobbin assembling machine comprising holding and feeding meansorganized to locate and support a tubular bobbin core successively intwo operating locations, an assembling rod and punch mounted toreciprocate beside the rst of said locations in approximate alinementwith the tubular core held in said location, means for feeding a stripof bobbin head material between such core and the withdrawn locations ofthe rod and punch, means for operating the rod and punch in time withthe feeding movements of said strip to permit advance of the strip andthen to move them toward the core position, whereby the punch severs abobbin head from such strip and the assembling rod crowds parts of thedisk into the end of the core and against the adjacent inner wallsthereof, a center rod and coaxial press die beside the second operatingposition of the tube reciprocatable in approximate alinement with thetube held in that position,

and means for advancing said rod into the tube and advancing the pressdie to emboss the previously attached head around the end of the tube.

9. An assembling machine comprising a rotatable index'mcmber havingrecesses forthe reception of bobbins, means for turning said member stepby step through angles equal to those between adjacent recesses, a punchand die assemblage adjacent to one of the stopping locations of saidrecesses including a punch Vreciprocable in alinement with suchlocation, an assembling rod mounted coaxially in said punch withprovisions for independent movement through the same and having aprismatic extension on its end nearest to the index member and being ofcircular section adjacent to said extension and of such diameter thatits circumference substantially coincides with the angles of theextension, means for advancing and Withdrawing the punch and assemblingrod respectively toward and from the index member, means for feeding ashearable strip between the withdrawn punch and assembling rod and thedie of said punch and die assemblage, a second rod mounted toIreciprocate toward and away from a more advanced stopping location ofthe said recesses, having a tapered extremity adjacent to the indexmember and a diameter adjacent its extremity slightly largerV than thatof the assembling rod, and means for moving the second named rod towardand away from the index member during the pauses of the latter.

CAMILLE E. BOULE.

